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Mechanical Design

By: Richard Shook. Mechanical Design. Overview. Computer-Aided Design Sample Design Design Process (SLAC) ST-O And Filters Background Analysis Results Design. Computer-Aided Design. Solid Edge 3D Digital Model Finite Element Analysis (FEA) Robust Editing

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Mechanical Design

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  1. By: Richard Shook Mechanical Design

  2. Overview • Computer-Aided Design • Sample Design • Design Process (SLAC) • ST-O And Filters • Background • Analysis • Results • Design

  3. Computer-Aided Design • Solid Edge • 3D Digital Model • Finite Element Analysis (FEA) • Robust Editing • 2D Drafting (Geometric Dimensioning and Tolerancing) • AutoCAD • 2D Model • Beam line Layout

  4. Modeling • Purpose • Visualization • Prototyping • Legal

  5. Sample of Modeling

  6. Basic Shape

  7. Protrusion Feature Able to make extended features on coincident planes

  8. Cutout Feature Removing material from selected bodies

  9. Round Feature Giving a selected edge, face or curve a radial feature.

  10. Why Did You Just Show Me This? • Organization • Clarity • Cooperation

  11. Organizational Chart

  12. Mechanical Design Process • Project • Data Sheets • Base Drawings • Vendor Documents • Design • Modeling • Official Drawings • Processing/Releasing • Approvals • Checker • Document Control • Fabrication • Manufacturer • Machinist • Implementation (Final Assembly)

  13. ST-0 and Attenuation Filters

  14. Filters • Function • Parameters • Beam Energy 800 eV to 9000 eV • Absorption Length: 10 microns to 100 microns • Attenuation factor: 10 microns to 100 microns • Geometry

  15. Background and Definitions • What is attenuation length/coefficient? • What is a k-edge and how can that help?

  16. Analysis • Intensity: where I is the intensity of the photon beam, α is the linear attenuation coefficient, x is the path length • Transmission: Beer-Lambert Law

  17. Analysis Cont’d Acceptable mat’l Rejected mat’l Used mat’l

  18. Data

  19. Transmission Graph Beam Transmission vs. Photon energy at 20 microns for Beryllium

  20. Mechanical Design • Geometric Parameters: • Thicknesses (determined by analysis) • Filter Cross-Sectional Area • Vacuum • Other Experiments • Materials • Acquired Parts/Vendor Parts

  21. Design

  22. Design Cont’d

  23. Design Cont’d

  24. Design Cont’d

  25. Design Cont’d

  26. Design Cont’d

  27. Acknowledgements • Dept. of Energy, Office of Science, SULI • SLAC • Rick Tankersley • Paul Stephens • Steve Score • Josef Frisch

  28. Resources • http://mdweb.slac.stanford.edu/index.php • http://www.plm.automation.siemens.com/en_us/products/velocity/solidedge/index.shtml • Materials Handbook, 14th ed. Brady, Clauser, Vaccari. McGraw-Hill 1997 • http://henke.lbl.gov/optical_constants/ • http://www.ct.infn.it/~rivel/Glossario/node30.html#29 • http://www.chemguide.co.uk/analysis/uvvisible/beerlambert.html • http://www.files.chem.vt.edu/chem-ed/spec/beerslaw.html • http://physics.nist.gov/PhysRefData/XrayMassCoef/cover.html • http://www.csrri.iit.edu/periodic-table.html

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